Hi there!
Its kind of difficult to find free complete software
but you can try the free trials.
You can try:
2D Animation Software
Adobe AfterEffects
Publisher: Adobe
License: Free Trial
Animator-9 3.6
Publisher: Key Technology
License: Free
Animator-DV (Read a Review from Animation@About.com!)
Publisher: AnimatorHD
License: Free Trial
Anime Studio Pro 5
Publisher: MySmithMicro
License: Free Trial
AniS 1.0
Publisher: Tom Whittaker
License: Free
Beneton Movie GIF
Publisher: Beneton Software
License: Free
Cylekx 2.9
Publisher: Cylekx
License: Free
DigiCel Flipbook 6
Publisher: DigiCel, Inc.
License: Free Trial
Flash Effect Site Builder
Publisher: Go2Share.net (Warning: website not safe for work)
License: Free Trial
Flash Media Show
Publisher: SourceTec Software
License: Free (Standard Edition)
FotoMorph
Publisher: Digital Photo Software
License: Free
GifSplitter 2
Publisher: XoYo Software
License: Free
Jumpwel
Publisher: Phildes
License: Free
KoolMoves 7.0
Publisher: KoolMoves
License: Free Trial
Software: Adobe Flash
Publisher: Adobe
License: Free Trial
Comments: The leading name in 2D vector animation.
Software: Macromedia Director
Publisher: Macromedia
License: Free Trial
Comments: Create interactive ShockWave content.
Software: Sqirlz Lite 1.1d
Publisher: xiberpix
License: Free
Comments: Animated image distorter that exports in AVI format.
Software: Sqirlz Morph 2.1 (Read a Review from Animation@About.com!)
Publisher: xiberpix
License: Free
Comments: Animated image morpher and blender. Capable of outputting in Flash format.
Software: The TAB Manga (Read a Review from Animation@About.com!)
Publisher: The TAB
License: Free Trial
Comments: Children's animation program.
Software: Toon Boom Animate (Read a Review from Animation@About.com!)
Publisher: Toon Boom
License: Free Trial
Comments: Industry-leading professional studio animation program.
Software: Ulead GIF Animator 5 (Read a Review from Animation@About.com!)
Publisher: Corel
License: Free Trial
Comments: Full-featured GIF animation software.
3D Animation Software
Software: 3D Studio Max 7.0
Publisher: Discreet
License: Free Trial
Comments: Version 7.0 of the award-winning 3D modeling and animation software package. Also comes with trials of Character Studio and Mental Ray.
Software: Cyberdelia (Read a Review from Animation@About.com!)
Publisher: Askoh.com
License: Free
Comments: 3D Animation with support for exporting into Macromedia Shockwave.
Software: FreeCAD 8.0
Publisher: Askoh.com
License: Free
Comments: Bit of a beginner's 3D CAD and simulation program.
Software: Gmax
Publisher: Discreet
License: Free
Comments: Oh, man. It's every gamer's dream: a free 3D program that lets you make your own modifications, customizations, and models for Gmax-ready video games. Based on 3D Studio Max.
Software: Maya 6.5
Publisher: Alias WaveFront
License: Free Trial
Comments: The latest version of an industry leader in 3D modeling and animation.
Software: Serif 3D Plus
Publisher: Serif
License: Free
Comments: Allows animated shapes and landscapes.
Software: Special Effects 3.2
Publisher: Mathematically Beautiful ScreenSavers
License: Free
Comments: Very limited range of pre-set animations controlled by user preferences.
Software: Touch Art Sampler 017
Publisher: Derivative
License: Free
Comments: More of a VJ/synthesizer studio than anything else, but still lets you play with animations. Looks rather fun.
Software: TrueSpace 3.2
Publisher: Caligari
License: Free
Comments: Full 3D rendering and output. Seems completely free, though you have to register to get an unlock code on the website. Cross-compatible with many programs.
Hope it helps
Bye!!